Zaman, M., K. Nahar, T. Chowdhury, and M. Chowdhury. “Growth, Leaf Biomass Yield of Stevia and Post-Harvest Soil Fertility As Influenced by Different Levels of Poultry Manure”. Journal of the Bangladesh Agricultural University, vol. 15, no. 2, Dec. 2017, pp. 212-8, doi:10.3329/jbau.v15i2.35065.